"I want to leave everything up to the male in front of me." An outstanding Alpha recognised by both himself and others, Tsuneyoshi was having another perfect day—supposedly. But he suddenly goes into heat as an Omega during an important presentation, filling the conference room full of Alphas with his pheromones...?! Upon fleeing back to his apartment, Tsuneyoshi is rescued by Asakawa, his neighbour. When he finds out his neighbour whom he thought was a Beta is actually an Alpha, he's powerless to stop the ache in his body... While Asakawa pins him down, he comes to realise he's become an Omega——. Then, he learns that Asakawa is also a variant Alpha——.